How do I convert Vitamin D (25-OH) from ng/mL to nmol/L?

nmol/L = ng/mL × 2.496. For example, 60 ng/mL equals 150 nmol/L.

How many nmol/L are 60 ng/mL?

60 ng/mL equal 150 nmol/L (Vitamin D (25-OH)).

Iron & vitamins

nmol/L = ng/mL × 2.496

Enter a value in any unit and all other units fill in.

ng/mL nmol/L

ng/mL → nmol/L	nmol/L = ng/mL × 2.496
nmol/L → ng/mL	ng/mL = nmol/L × 0.4006

Highlighted: values inside the adult reference range.

30.05 – 80.13 ng/mL = 75 – 200 nmol/L

Source: MedlinePlus (NLM): Vitamin D test · Last reviewed: 2026-10-14